The general specifications of thermal paper are:
57x50, 57x60, 57×80, 75x50, 75x60, 75x80, 80x50, 80x60, 80x80，80×140

The general specifications of common two-side offset paper are:
44x40型、57x60型、70x60型、75x60型、75x80型、76x80型、82x80

The general specifications of carbon free cash register paper are:
57x40 double deck,  57x60 double deck, 75x60 double deck, 75x60 three layers, 241x100 double deck, 241x100 three layers.

The specification of carbon free cash register paper is always 75*60, the common carbon free cash register paper is divided into two layers and three layers, it has many different kinds of requirements according to its colors, such as two white layers, two white and red layers, three white layers, white, red and yellow, white, red and blue, the colors of cash register paper have no influence on its cost. There are three factors that have an influence on its cost, they are diameter, thickness and quality. 75*60 cash register paper with two layers is always two yuan a roll while three layers is two point and five yuan a roll. This is the cost of paper with good quality, if there is no high requirements, common carbon free paper can be material for producing, it can produce paper with less forty percent cost.